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公开(公告)号：US6134071A
公开(公告)日：2000-10-17
申请号：US93963
申请日：1998-06-08
申请人： Haruo Andoh , Keiji Kobayashi , Yuji Yokoe , Kazunari Tsuchimoto
发明人： Haruo Andoh , Keiji Kobayashi , Yuji Yokoe , Kazunari Tsuchimoto
摘要： The present invention provides a disk drive, a load/unload unit, and a control method thereof which are capable of reliably unloading a head slider from a disk when power is turned off and enhancing reliability. A disk drive is equipped with a VCM spindle driver for rotating a disk, a magnetic head, an actuator mechanism for moving over the surface of the magnetic disk or to an evacuating position a head slider having the magnetic head, a ramp block, and a CPU/HDC (control means) for performing control of load and unload operations, speed control of the actuator mechanism, and control of an operation of reading or writing data from or to the disk. The CPU/HDC receives a specific command issued from the host immediately before power is turned off, and executes this command, then executes unload control, and notifies the host of command completion after the unload control has been completed.
摘要翻译： 本发明提供了一种磁盘驱动器，装载/卸载单元及其控制方法，其能够在电源关闭时提供可靠地从磁盘卸载磁头滑块并提高可靠性。 磁盘驱动器配备有用于旋转磁盘的VCM主轴驱动器，磁头，用于在磁盘表面上移动的致动器机构或者具有磁头的磁头滑块，斜坡块和 用于执行加载和卸载操作的控制的CPU / HDC（控制装置），致动器机构的速度控制以及从盘读取或写入数据的操作的控制。 在电源关闭之前，CPU / HDC接收到从主机发出的特定命令，并执行该命令，然后执行卸载控制，并在卸载控制完成后通知主机命令完成。
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公开(公告)号：US6088818A
公开(公告)日：2000-07-11
申请号：US009143
申请日：1998-01-20
摘要： To decrease the number of read errors of a storage device due to bus noise when data is transferred between a host apparatus and the storage device. When a read error due to bus noise is detected, transfer of data to a host apparatus is temporarily stopped when executing rereading to eliminate bus noise which is a cause of the read error. In a preferred embodiment bus noise errors are distinguished by looking at the frequency of errors and the retry count for the previous error. The error is detected as a bus noise error if the frequency is above a threshold and the retry count is below a threshold. Data transfer can be restarted when a buffer becomes full or when the reading of the data is successfully completed.
摘要翻译： 当在主机设备和存储设备之间传送数据时，减少由于总线噪声引起的存储设备读取错误的数量。 当检测到由总线噪声引起的读取错误时，在执行重新读取时暂时停止向主机设备传送数据，以消除作为读取错误的原因的总线噪声。 在优选实施例中，通过查看错误的频率和先前错误的重试计数来区分总线噪声误差。 如果频率高于阈值并且重试次数低于阈值，则该错误被检测为总线噪声误差。 当缓冲区已满或数据读取成功完成时，可重新启动数据传输。
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公开(公告)号：US6125459A
公开(公告)日：2000-09-26
申请号：US12360
申请日：1998-01-23
CPC分类号： G06F11/0778 , G06F11/0727 , G06F11/0757
摘要： Even in the case of a full hang state where a command to reset software is entirely ineffective, memory dump can be stored even if there is no in-circuit emulator. An HDD itself monitors a command execution time, that is, the time between reception of a command from a host computer and completion of the process of the command. If the HDD judges that it has taken an abnormally long time, a memory dump will be automatically stored on a reserved area on a disk. The memory dump can be read out from the disk at any time so that an analysis can be made.
摘要翻译： 即使在完全挂起状态的情况下，重置软件的命令完全无效，即使没有在线仿真器，也可以存储内存转储。 HDD本身监视命令执行时间，即从主计算机接收到命令和完成命令的处理之间的时间。 如果HDD判断为异常长时间，内存转储将自动存储在磁盘上的保留区域。 可以随时从磁盘中读出内存转储，以便进行分析。
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公开(公告)号：US6061805A
公开(公告)日：2000-05-09
申请号：US969204
申请日：1997-11-12
申请人： Hiroaki Suzuki , Hideo Asano , Atsushi Tobari , Satoshi Nishino , Shuji Yamada , Haruo Andoh , Tsuguaki Kowa
发明人： Hiroaki Suzuki , Hideo Asano , Atsushi Tobari , Satoshi Nishino , Shuji Yamada , Haruo Andoh , Tsuguaki Kowa
CPC分类号： G11B19/041
摘要： An error recovery procedure (ERP) in a storage device such as a rotating magnetic hard disk drive is executed to the last step regardless of the established time-out period for an instruction, thereby more reliably recovering from errors. In accordance with one embodiment of the invention, when a disk drive receives a reset instruction from a host during the execution of an ERP, it executes the ERP until the error is recovered, or to the last step without interrupting the ERP. Further, in accordance with another embodiment of the invention, when a disk drive receives a reset instruction during the execution of an ERP, it stops execution of the ERP and holds the number K of the step which was completed immediately before stopping, and when receiving a retry instruction after that, sequentially executes the ERP from the K+1-th error recovery step.
摘要翻译： 执行诸如旋转磁盘驱动器的存储装置中的错误恢复过程（ERP）到最后步骤，而不管建立的指令的超时周期，从而更可靠地从错误中恢复。 根据本发明的一个实施例，当磁盘驱动器在执行ERP期间从主机接收到重置指令时，它执行ERP直到错误被恢复，或者直到最后一步而不中断ERP。 此外，根据本发明的另一实施例，当磁盘驱动器在执行ERP期间接收到重置指令时，它停止执行ERP并保持在停止之前立即完成的步骤的数量K，并且当接收到 之后的重试指令，从第K + 1错误恢复步骤顺序地执行ERP。
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公开(公告)号：US4364988A
公开(公告)日：1982-12-21
申请号：US61253
申请日：1979-07-27
申请人： Haruo Andoh , Susumu Kitaoka , Toshinobu Sueyoshi , Hikaru Ishida , Akira Kato
发明人： Haruo Andoh , Susumu Kitaoka , Toshinobu Sueyoshi , Hikaru Ishida , Akira Kato
CPC分类号： G11B5/70642 , G11B5/70673 , Y10S428/90 , Y10T428/24942 , Y10T428/257
摘要： An improved magnetic recording medium is disclosed, particularly a magnetic tape suitable for sound recording and video recording, which comprises as a recording element a mixture of cobalt-containing iron oxide magnetic particles consisting essentially of ferromagnetic iron oxide particles containing cobalt and optionally a divalent iron in the most outer layer thereof, and .gamma.-ferric oxide particles in the ratio of 10:90 to 50:50 by weight, said mixture of cobalt-containing iron oxide magnetic particles and .gamma.-ferric oxide particles being applied to a substrate (e.g. a polyester film) with a binding agent. The magnetic recording medium has excellent electromagnetic transducing properties and improved charging properties and is useful for conventional magnetic recording apparatus used at normal position with high sensitivity in wide range of frequency.
摘要翻译： 公开了一种改进的磁记录介质，特别是适用于录音和视频记录的磁带，其包括作为记录元件的含钴氧化铁磁性颗粒的混合物，其主要由含有钴的铁磁性氧化铁颗粒和任选的二价铁组成 在其最外层和按重量比例为10:90至50:50的γ-氧化铁颗粒，将所述含钴氧化铁磁性颗粒和γ-氧化铁颗粒的混合物施加到基底（例如， 聚酯薄膜）。 磁记录介质具有优异的电磁感应特性和改善的充电特性，对于在宽频率范围内具有高灵敏度的正常位置使用的常规磁记录装置是有用的。
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6.发明授权
公开(公告)号：US4857417A
公开(公告)日：1989-08-15
申请号：US141073
申请日：1988-01-05
申请人： Susumu Kitaoka , Haruo Andoh , Junichi Hirata
发明人： Susumu Kitaoka , Haruo Andoh , Junichi Hirata
IPC分类号： G11B5/706
CPC分类号： G11B5/70694 , Y10S428/90 , Y10T428/2991
摘要： Cobalt-containing iron oxide magnetic particles having a high coercive force and a small surface electrical resistance which are useful as a recording element for a magnetic recording medium, and a method for the preparation of the same comprising reducing acicular .gamma.-Fe.sub.2 O.sub.3 particles in a reducing gas or liquid until the iron oxide reaches an intermediate oxidation state between .gamma.-Fe.sub.2 O.sub.3 and Fe.sub.3 O.sub.4, dispersing the resulting iron oxide particles into an aqueous solution containing a cobalt salt and optionally a ferrous salt and an alkali of one equivalent or more to the metal salt(s), and heating the mixture at a temperature of higher than room temperature up to a boiling point of the mixture under an atmospheric condition such that the divalent iron is substantially not oxidized. The cobalt is thereby predominantly incorporated into the most outer layer of the acicular iron oxide particles.
摘要翻译： 可用作磁记录介质的记录元件的具有高矫顽力和小表面电阻的含钴氧化铁磁性颗粒及其制备方法包括还原针状γ-Fe2O3颗粒的还原性 气体或液体，直到氧化铁在γ-Fe 2 O 3与Fe 3 O 4之间达到中间氧化态，将得到的氧化铁颗粒分散到含有钴盐和任选的亚铁盐和一当量或更多的碱金属盐的水溶液中 并在大气条件下在高于室温的温度下将该混合物加热到混合物的沸点，使得二价铁基本上不被氧化。 因此，钴主要并入针状氧化铁颗粒的最外层。
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公开(公告)号：US4624883A
公开(公告)日：1986-11-25
申请号：US590796
申请日：1984-03-19
申请人： Satoru Yamaguchi , Kozaburoh Satoh , Jozo Shimizu , Haruo Andoh
发明人： Satoru Yamaguchi , Kozaburoh Satoh , Jozo Shimizu , Haruo Andoh
CPC分类号： G11B5/716 , Y10S428/90 , Y10T428/24942 , Y10T428/24975 , Y10T428/256 , Y10T428/257
摘要： A magnetic recording medium which comprises a first magnetic layer on a base and a second magnetic layer over the first magnetic layer, the second magnetic layer containing magnetic particles having an average particle length (long axis diameter) of not more than 0.35.mu. , with a coercive force of from 660 to 760 oersteds, and the ratio of the coercive force of the upper or second magnetic layer to that of the lower or first magnetic layer being 1.1/1 to 1.6/1. The resulting magnetic recording medium has excellent sensitivity and frequency characteristics over the entire frequency bands with less noise.
摘要翻译： 一种磁记录介质，包括基底上的第一磁性层和第一磁性层上的第二磁性层，所述第二磁性层含有平均粒径（长轴直径）不大于0.35μm的磁性颗粒，其中 660〜760奥斯特的矫顽力，上层或第二层的矫顽力与下层或第一层的矫顽力的比值为1.1 / 1〜1.6 / 1。 所得到的磁记录介质在噪声较小的整个频带上具有优异的灵敏度和频率特性。
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公开(公告)号：US4299882A
公开(公告)日：1981-11-10
申请号：US154015
申请日：1980-05-28
申请人： Fumio Togawa , Haruo Andoh , Toshihiko Tanabe
发明人： Fumio Togawa , Haruo Andoh , Toshihiko Tanabe
CPC分类号： G11B5/7013 , Y10S428/90 , Y10T428/257 , Y10T428/258
摘要： A magnetic recording medium which comprises a base and a magnetic layer of a magnetic coating composition comprising magnetic particles and a binder provided on said base, characterized in that the magnetic coating composition further comprises a dialkylsulfosuccinate.
摘要翻译： 一种磁记录介质，其特征在于，磁性涂料组合物还包含二烷基磺基琥珀酸盐，该磁性涂层组合物包含磁性涂料组合物，该磁性涂料组合物包含磁性颗粒和粘合剂。
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9.发明申请Medium drive and method of generating a defect map for registering positions of defects on a medium 失效介质驱动器和产生用于在介质上记录缺陷位置的缺陷图的方法公开(公告)号：US20070174564A1
公开(公告)日：2007-07-26
申请号：US11654045
申请日：2007-01-16
申请人： Haruo Andoh
发明人： Haruo Andoh
CPC分类号： G11B20/1879 , G11B20/18 , G11B20/1883 , G11B2020/1826 , G11B2220/20
摘要： A hard disk drive (HDD) according to an embodiment of the present invention uses three primary defect map (PDM) formats: a single-sector entry format; a multi-sector entry format; and a two-dimensional sector entry format. Methods of registering defective sectors in each such format are illustrated. Defects can be appropriately registered in a limited RAM capacity by selecting an appropriate format according to states of the defects on a magnetic disk.
摘要翻译： 根据本发明的实施例的硬盘驱动器（HDD）使用三个主要缺陷映射（PDM）格式：单扇区输入格式; 多扇区录入格式; 和二维扇区输入格式。 示出了以各种格式记录缺陷扇区的方法。 通过根据磁盘上的缺陷的状态选择适当的格式，可以在有限的RAM容量中适当地登记缺陷。
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公开(公告)号：US20060132959A1
公开(公告)日：2006-06-22
申请号：US11288685
申请日：2005-11-28
申请人： Haruo Andoh
发明人： Haruo Andoh
IPC分类号： G11B17/00
CPC分类号： G11B5/5547
摘要： Embodiments of the invention provide a disk drive capable of preventing the deterioration of performance. In one embodiment, a disk drive includes a disk medium; a head capable of performing a read/write operation for accessing the disk medium to read information from and to write information to the disk medium; a head controller for controlling the position of the head so that the head describes a substantially spiral trajectory relative to the disk medium; and a controller capable of controlling the head controller, of performing a read/write operation for reading or writing information with reference to an identifier table associating sector identifiers identifying sectors on a specified track with logical block addresses, and of creating an identifier table for a track to be accessed next during the read/write operation.
摘要翻译： 本发明的实施例提供一种能够防止性能下降的磁盘驱动器。 在一个实施例中，磁盘驱动器包括磁盘介质; 能够执行用于访问盘介质的读/写操作以从盘介质读取信息并向盘介质写入信息的头; 头部控制器，用于控制头部的位置，使得头部相对于盘介质描述基本上螺旋的轨迹; 以及能够控制头控制器的控制器，参考将识别指定轨道上的扇区的扇区标识符与逻辑块地址相关联的标识符表执行用于读取或写入信息的读/写操作，以及创建用于 在读/写操作期间接下来要访问的轨道。
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